PDF / .TXT malware analysis — malicious · 2c08d26edf4b8991

MALICIOUS

PDF / .TXT

4.1 KB

MD5: 1671eae429f9e8d5103c7220b24728d3 SHA-1: 27ba45c8ead52bcb57810c09b22396d28491d396 SHA-256: 2c08d26edf4b8991313020488bbfb6c2dbc8562d63fefeef2e477361b7b6284b

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream exhibits obfuscation and uses eval() and String.fromCharCode(), suggesting malicious intent. The deobfuscated JavaScript file 'acroform_b64_00.js' is likely responsible for downloading and executing a secondary payload. The extracted file names and the nature of the heuristics point towards a downloader or dropper functionality.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `0d7f118cd3e219aef262c9874f857c9e3c1edd272fd33a27d670058e1de9fd20`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6377 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `d1f8cb40ce68eb52c68b5069e3afdfeb1e7ae0972464a0d47c1d8b70f19a9f2f`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3628 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.